Steam-blast gas-burner.



PATENTED APR. 2,8l 1908.

' G. S. BENNETT. STEAM BLAST GAS BURNER.

APPLICATION FILED MAB. 13. 1907.

2 SHEETS-SHEET 1.

12M/entenl S; Bennett mil/322.495.995:-

y gg' my ru: Novus rrr-ns a-o., ruimere". D. e.

leo

GEORGE S. BENNETT, OF SAN FRANCISCO, CALIFORNIA.

STEAM-BLAST GAS-BURNER.

Application ledMarch 13, 1907.

Specication of Letters Patent.

Patented April 28, 1908.

Serial No. 362,227.

To all whom it may concern:

Be it known that I, GEORGE S. BENNETT, a citizen of the United States,residing in the city and county of San Francisco, State of California,have made certain new and useful Improvements in Steam Blast GaseBurners, of which the following is a specificae tion in such full andclear terms as will enable those skilled in the art to'which itappertains to construct and use the same.

This invention relates to steam-blast gasburners used in the ordinarycooking, or pther stoves, for replacing wood or coal as uel.

One of the objects of the invention is to make a burner that will spreadthe gas llame out in such a manner as to nearly fill the fire box of theordinary stove, without the consumption of an excessive quantity of gas.

A further object of the invention is to heat the gas before it hasescaped from the jet in order to decrease the quantity used, the eX-panded gas passing the opening under the same pressure at a slower ratethan the cold gas.

A further object of the invention is to produce a burner that willsupply to the gas flame the proper amount of' air to completely burn thegas with a colorless flame, or at least with as clear a flame as it ispossible to make.

` A further object of the invention is to make a burner that will supplyto the steam jet its own steam, the heat from the blaze acting on theiron of which the burner is made to keep the required amount ofl steamin the pipes at all times.

A further object of the invention is to produce a burner that will havemeans to cause the iiame to be directed upwardly toward the top of thestove.

Other objects of the invention will appear as the description proceeds.

In the drawings, Figure 1 is an end view of a common stove inperspective, the end door being open to show the burner in place. Fig. 2is a partial section through the base of the burner in a plane parallelto the plane of' Fig. l. Fig. 3 is a vertical section through a modifiedform of the burner, and Fig. 4 is an elevation of the same looking fromthe left in Fig. 3.

Like numerals and letters of' reference are applied to like partsthroughout.

The stove is lettered A and the burner is indicated at B. The burnerproper is built around the elliptical base 13 into the bottom of whichthe pipes 2 and 3 are threaded. The pipe 2 is connected into a T andwith any water supply pipe which is under a good pressure such as anycity main carries. The pipe 3 is the gas pipe and is connected with anysuitable gas main. Each ofthe above pipes havel a valve to cut off thesupply of water and gas respectively, said valves being numbered 4 and5.

The base plate has a cored out portion as shown in Fig. 2 with which thegas pipe connects, and an opening at one end into which the pipe 6 isthreaded. This pipe 6 is a short pipe commonly called a "nipple and itcarries at the top a T. This T is provided with a closing plug l() andinto the T is also screwed the pipe 3, and in order to give the pipessome further rigidity a second T is placed on the end of the pipe 3, anda plug 7 is screwed into the second T and also into the base plate 13,enough threads being run on both ends of the plug to turn back andsecure the plug in the base plate. This second Tis also provided with aplug numbered 1l.

In the base plate 13 there is an opening 14 into the gas chamber leadingfrom the pipe 3, and over this opening is placed the baffle plate 12which stands on short legs. The gas opening is placed directly under thesteam jet 9 in the bottom of the pipe 8, and when the steam jet isblowing the current of steam carries air along with it and causes thegas to burn with a flame that is almost colorless, but if no furtherprecautions are taken the ilame spreads out badly and to counteract thistendency the ring 15 is provided. This ring is seated on the plate 13and causes the flame to be directed upwardly toward the top of thestove.

The preferred form of the invention has been sho'wn in the abovedescribed iigures, but I am aware that modifications of the inventionmay be made without departing from the scope of the same and one suchmodification is shown in the 'figures numered 3 and 4. This form of theinvention is more complicated and difficult to cast than the abovedescribed form, but the principle is precisely the same in each case.

In the modiiied form of the invention the base plate of the burner,numbered 28, is provided with pan like sides to direct. the llameupwardly, but itis better to make this ring 15 separate as shown in Fig.1, and in the center of the pan in a boss 29 which has an opening 35entirely through it. In the opening 35, at the top thereol"l is screwedthe boss 30 of the steam dome 20, and into the bottom of the opening 35is screwed the packing 31 around the pipe 32 which latter passesentirelyT through the pan and up into the steam dome connecting with thegas leader 22 in which the hole 25 hasv been bored, the ends of saidhole being plugged up. Leading from each end of the hole 25 is a passagepointing downwardly in which the tips 26 are screwed. Near the tips 26and at an angle therewith such as to make the steam discharge across thegas jet are placed the steam jets 27, which lead into the steam dome.

In order to close the steam dome the top 2l is provided, said top beingheld in place by means of the screw 23 which is threaded into the gasleader 22 said leader being a part of the main casting of the steamdome. The tongue 24 is provided to make a steam tight joint.

It will be noted that each of the burners above described operate on theprinciple of providing steam to blow the burning gas, and

on the principle of heating the gas prior to its use, the gas beingheated from the time it passes into the opening 35 until it escapes atthe nozzles 26. The water is led into the dome through the pipe 33 whichis tapped into the hole 34 in the boss 29.

The method of operation in both cases is the same and is as follows: Thegas is turned on and the heat from the smutty flame is great enough tostart the steam to rising from the small quantity of water, which isalso turned on. As the heat becomes greater the steam continues to riseand blows off through the nozzles, or nozzle, as the case may be. Theblowing of the steam is sufficient very shortly to eHect a betterburning of the gas i'lame which causes more steam to generate, and in avery short time the blaze is going full force, and it will continue toburn without soot so long as the supply of water is maintained. There isno danger of explosion of the water chamber for the reason that as thepressure increases the steam blows oil? the faster, the steam tip alwaysbeing open. It will also be noted' in each case that the steam jetextends above the metal of the steam chamber in order to insure againstthe collection of scale in any way interi'ering with the operation ofthe steam tip.

It will be noted that the water supply pipe 6 may be cleaned very easilybecause the plug 10 is over a T in the base plate in which there isanother plug which may be taken out and in that way leave a clearopening to push a rod through, the entire burner not having to bedisconnected.

Having thus described my invention in such full and clear terms as willenable those same.

skilled in the art to construct and use the same what I claim and desireto secure by Letters Patent of the United States is as follows:

l. In a steam blast gas burner, the combination of a base plate having apassage for gas and a vertical passage for water therethrough, a steamgenerator above the base and connected with the water passagetherethrough, a downwardly projecting nozzle carried by the steamgenerator discharging toward the end of the gas passage in the baseplate, and gas and water pipes connected with the base plate below thesame.

2. In a steam blast gas burner, the combination of a base plate having apassage for gas and a Vertical passage for water therethrough, a steamgenerator threaded into the water passage in the base plate and carriedthereby, a downwardly projecting nozg zle carried by the steam generatorand discharging toward the end of the gas passage in the base plate, andgas and water supply pipes connected to the base plate below the 3. In asteam blast gas burner, the combination of a base plate having a passagefor gas and a vertical passage for water therethrough, a steam generatorcarried by the base plate and connected with the water passage therein,a nozzle connected with the steam generator and discharging toward theend of the gas passage in the base plate, an upwardly projecting ringcarried by the base plate, and a gas and a water supply pipe connectedwith the base plate below the same.

4L. In a steam blast gas burner, the combination of a base plate havinga passage for gas and a vertical passage for water therethrough, a steamgenerator carried by the base plate and connected with the water*passage in the same, a nozzle extending into and through the bottom ofthe steam generator and discharging toward the end ofthe gas passage inthe base plate, an upwardly projecting ring carried by the base plate,and a gas and a water supply pipe connected to the bottom of the baseplate.

5. In a steam blast gas burner, the combination of a base plate havinggas and water passages therein and supply pipes connected therewithbelow the same, a steam generator above the base plate and connectedwith the water supply, means to direct a jet of steam toward the baseplate and. the gas escaping therefrom said means extending into andthrough the bottom of the steam generator, and a gas and a water supplyvalve in the supply pipes.

6. Ina steam blast gas burner, the combination of a base plate havinggas and water supply pipes connected therewith, a shortv vertical nipplescrewed into the plate, a horizontal pipe screwed intova T carried bythe nipple, and a steam nozzle carried by the 130 horizontal pipe andadapted to blast steam toward the base plate and toward a jet of gasfrom an opening in the top of said base plate, substantially asdescribed.

7. In a steam blast gas burner, the combination of a base plate havinggas and water supply pipes connected therewith, means to generate steamconnected to the top of the plate and extending above the same, means todirect a blast of steam from the steam generator downwardly toward thebase plate and toward a burning jet of gas from the gas supply, saidmeans consisting of a nozzle which extends into and above the bottom ofthe steam generator, and a loose ring carried by the base plate andextending upwardly therefrom and adapted to direct the flame from theburner upwardly, substantially as described.

S. In a gas burner, the combination of gas and water supply pipes, abase plate to `which said pipes are connected said plate having avertical Water passage and a gas passage extending from a point near oneend to a point in proximity to the water pipe connected to the base andto which the gas supply pipe communicates, means to generate steamconnected with the water supply, and means to direct steam from thegenerator toward the base plateand toward a jet of burning gas from thegas supply, substantially as described.

9. In a steam blast gas burner, the combination of a base plate having apassage for gas and a vertical passage for water therein,

gas and water supply pipes connected therewith, said base beingelliptical in shape in plan, means to generate steam connected with thewater supply, means to direct a steam jet toward the base plate andtoward a j et of burning gas from the gas supply, and a ba'lile plateplaced over the opening in the base plate to the gas supply to assist inspreading the flame from the gas jet, substantially as described.

10. In a steam blast gas burner, the combination of a base plate, havingwater and gas supply pipes connected therewith, said base beingelliptical in plan, means to generate steam connected with the watersupply,

means to direct a steam jet from the steam generator toward the baseplate and toward a jet-of burning gas from the gas supply, said meansextending through and above the bottom of the steam generator wherebyscale will be prevented from interfering with the action of the steamjet, and an elliptical ring carried by the base plate and extendingupwardly from the same, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of thetwo subscribing witnesses this 7th day of MarchA. D. 1907 in the cityand county of San Francisco, State of California.

GEORGE S. BENNETT.

